Lock for airplane doors or the like



fAug, 75 1945, s. oxHANDLER 25381512 Y LocK FOR M RPLANE DooRs QR THE LIKE Y Filed May 24, 1943 2 sheetssheetl Aug. 7, 1945. s. oxHANDLER A v LOOK FOR AIRPLANE DOORS OR THE LIYKE Filed May-24,1943 2 sheets-snee? 2 kPatented Aug.r 7, 1945 Samuel xhandler, Flushing, N.y Y., assignor to Y Sargent`& Company, New 'Haven Conn., a corporation of! Connecticut Application'Ma-y 24, 1943', Serial No. 488,110.

. This `inventionrelates to locks-for closure mem.-

, berslsuchas-hatch doors, for example, and isfparticula-rlyf adapted Afor.` use rwith closure members fk ofithischaracter. employedluponairplanes. Howeven. while: the invention: isl illustrated' and de'- 'k scribedf assparticularlyf relatedtoy hatch` doors; it will; be. understood thatthe* structure described and-claimediisjcapable vof broad use, andthe appended-V claims fareintended .tof cover the structure described: independently; of:- the particular environment in which it mayfbexemployed: The/invention isillustra-tedaas applied tofdoors which are hingedat. oneside and which. areprovided: withaf plurality'of bolts extending from: the' f door. intoY the' door lamb: to. holdi the former in securelyfclosed position, 'Iheseboltslareinsp'aced relationzabout the edgesofthe doorandf, as shown',

' extend from: all. ofthe edgesi-ofzthejdoor .exceptthe rhinge edge. Thisiarrangement istsparticularlyl suitable.- for suchclosuref membersas `hatch doors;

for example.'v

When such doors -are-` used: upon .airplanes itis desirable ythat. there; be no: operating; members: or otherk elements proj e'ctingfrom the'-4 outer.' surface of` the-door and, while .it is vnecessarxyrtohave some ing mechanism-being provided-:with` a. plurality ofy bolts extending from theedgeofthe. door tohold it in closed position and being provided with a boltoperating or.v` actuating. element whiohser-ves the doublev function .ot withdrawing the bolts. and moving. the door lto open,- position upon continued movement ink thev same direction Astill. further object .oil tha-inventionv is: the provision. of, a lock mechanismoa the character described,gin which the bolt' operating member may be retained, when not. in-use, in: a position substantially flushwith the outside. of the door so ythat projecting parts or elements arefavoided.`

A still further objectof the. invention is the provision of a look mechanism of thecharacter described in.- whichthe manually actuated boltoperating.. member is pivoted-tothesdoorto swing outwardly. about itsf pivot and inwhichthis member normally isfretain'e'cl` infaposition substantiallyfush withthe door, vtl'ieparts:being, so-jarranged thatl this member` may'i'irst swing'. out.-

` wardly` to `a-.position in whiohfitmaybe graspedby means at the outside of. thea door-:for vopeni'ngtlie latter, such-.means ishoulds bev arranged so :that it is 1 flush n orsubstantially flushwith. the Vsurface orthe door to'avoidranyf-projecting members.

'l Also,- it. is amatteroffv great convenience lif the manually actuating memberiwhichlserves to iwithdrawthe b o1ts-from locked; position: alsobeemployed as the member lto draw or raise the door to its.openpositionandthus avoidthe use :of: t'wo separate members for thesefunctions)k vMoreover, it,is-,additionally, desirablethat` thissin'gle'v actuating: e1ement.be-moved in: the same direction to accomplish. beth; functions, Sabha@ mamey, for.'

s open.v vthe :f door:l may simply' graspI thisi` operatingelement and,\.byf continued: movementpof` the. e'lement-Tin. one-..direotion, may first. withdraw the bolts to unlocktheadoor'and'thereafter pullzthe GOUE-m7013611 position:v

. One 4,obj ect; of. the present` inventionf isl to. .pro-

Vide; afnew and infiprovedv lock-z.mechanismvv for closure memberswhioh `will Yfbeisirnple inf construe-1` tion and -whichmay be.convenientlyI operatedlto unlock andopenthe door.

A still further: object offthe inventionisfthe.

provisiomof. a.1oek.mechanism foreclosure. meml55 `tion of the parts shownl in Fig. 3;

the handwithout affectingr` the' positionof. the bolts, then. be.- given. ya.. further Y movement l iny the same direction to withdraw the bolts from, their keepersand thereafter be-'given a further movementin. the. same direct-ion; which serves tofpull or draw the. door to open position. v

To theseandother ends., the inventionl consists in.. the novelfeaturesy and A combination ofy parts to be hereinafter.'.described` Iand. claimed.

In the. accompanying. drawings Fig. 1.is.an-outsidemlanview of a'doory such as a yhatchdoor., .for example, -embodyingmyinvention;`

Fig.. 2. is anelevationalview of a. like: structurel upon the inside ofrthe door, i. e.; the-side :opposite that shownin1Fig.-1;

Fig1 3 f is a sectional View on-,line- 'Ii- 3f of- Fig:v 2; Fig. 4-is afsectionalviewfon line ll-llioiFigi 2; Fig. 5 isasectional View online-aoffFig: 2; Fig. 6-is aview ofthebolt-operatingfmember in position corresponding to the dotted .line posi- Fig. 7 is aviewsimilar to Fig. 6 but showing the position of` the bolt-operating member when' the boltsare fully withdrawn; l

Fig. 8 isa-view similar tozFig. 3-but showing thefpar-tsintheposition occupied when the bolts are fully withdrawn,r i; e., corresponding 11o-the position of the bolt-operating memberI shownin Fig. 7; f f

l Fig. 9is an; elevational vView ofrthefbolt-operating member, alone; andVv v Fig'. 10. isa similar. View of the,intermediate or connecting disk serving to connect the manually operated handle at the outside of the door with the bolt-operating member shown in Fig. 9.

To illustrate the preferred embodiment of my invention I have shown in the drawings a door I D such as a hatch door for example, hinged at I I to a body or frame l2, this frame being provided with openings or keepers I3 to receive bolts I4 f mounted upon the ends of rods I5 disposed at the inside of the door and pivoted at their inner ends by means of pins I5a to a bolt-operating or actuating memberwl of disk-like form as shown, for example, in Fig. 9. l

While six bolts I4 are shown in Fig. 1 extending to three edges of the door I0, that is to all edges except the hinged edge, the number of bolts employed may, of course, be varied as desired without departing from the'scope of the invention. It will also be understood that the device is not limited to hatch doors but may be used upon any closure members to which it may be appli-` cable.

In order that the outside manually operated member for actuating disk I6 may be retained in a position substantially iiush with the outer surface of the door I0, the latter is provided with a substantially T-shape opening I'I and upon the inside of the .door is secured a housing I8 of similar shape which covers this opening. The housing I8 may be secured upon the door by means of projecting ears I9 `and bolts 2|) shown more especially in Fig. 2. This housing thus provides a recess or counter-sink within which may lie the operating handle 2| in a position as shown in Fig. 3, in which its outer surface is substantially flush with the outer surface of the door. The housing I8, as stated, is substantially T-shape in form and comprises a longitudinal portion 22 and a horizontal portion 23. At its upper end the longitudinal portion 22 of the housing is offset inwardly as shown at 24 for a purpose to be hereinafter set forth and in this portion of the housing is secured, by rivets 25, a leaf spring 26.

The'operating handle 2| is also of T-shape form as shown in Fig. l and fits snugly within the opening I'I and housing I, This member is pivoted at 21 to the lower end of the longitudinal portion of the housing I8 so that it may swing outwardly from its flush position shown in Fig. 3 to the dotted line position shown in that gure and also to the full line position shown in Fig. 8. In order that it may be retained in its flush position, a bolt or catch member 28 is slidably mounted in the upper end yof the handle and is urged outwardly by a spring 29 so that the projecting end of this member may enter an opening 3| in the housing I8, the member 23 serving as a latch or bolt to retain the handle in its depressed position within the housing. The end portion 3U of the bolt member 28 may be beveled as. is usual with latch bolts for example, so that. when the handle is moved to depressed position, the bolt 28 may be cammed inwardly against the spring 29. In order to release the bolt 23 from its keeper opening 3|, a nger piece 32 is secured to the bolt and extends outwardly through a slot 33 in the handle so that it may be conveniently grasped by the lingers of the operator and moved downwardly as shown in Fig. 3. The enlarged portion 24 of the housing I8 permits the upper end of the handle 2| to be enlarged or thickened slightly in order to properly accommodate the bolt 28 and also provides r-oom for the leaf spring 2B which serves to move the handle from its full line to its dotted line position shown in Fig. 3 when the bolt 28 is retracted by the finger piece 32.

The housing I8 is provided with a laterally extending supporting member 35, upon which the bolt-operating disk I6 is rotatably mounted by means of the pin 3B and at'the end of this member, as shown in Fig. 4, is a pin 3'I extending through an arcuate slot 38 in disk I6 which serves to limit the rotation of the disk. The disk I6 is also provided Vwith a second arcuate slot 39 and a short slot 4D, the purpose of which will be described hereinafter, it being understood that the pin 36 extends through the central opening 4I in this disk.

The means` by which the operating handle 2| is connected to the bolt-operating member I3 will now be described. It has already been noted that this operating handle when the finger piece 32 isvdepressed as shown in Fig. 3 is given an initial movement Vabout its pivot 2'I by the spring 26. In order that this initial movement may take place without moving the bolts I4, it is necessary to provide a lost-motion connection between the handle and the bolt-operating member I3 for it would. of course, be disadvantageous to have the bolts moved at this time, as this would require a' spring ZI-of suflicient strength to efiect movements of the bolts.

To this end, I have provided a connecting disk shown at 43 in Fig. 10 which serves as an intermediate motion transmitting member between the handle 2| and operating disk I3. This connecting disk 43 is provided with a central opening 44 by means of which it is pivoted upon the Vpin 39 which also carries the operating member IE. The disk 43 is also provided with a pin 45 which projects into the slot 49 of the member I 3, the slot being longer` than the diameter of the pin, This pin-and-slot connection between the two disks serves to connect the two for rotation together but also gives the disk 43 a slight movement independently of the operating member I6 and thus provides suiiicient lost motion to enable the spring 26 to move the handle 2| from the full line to the dotted line position shown in Fig. 3 rbefore the pin 45 moves from the lowerv end of the slot 49 as shown in Fig. 2 to the upper end of this slot as shown in Fig. 6 where it picks up and initiates movement of the member I6. i

Upon the lower end of the handle 2 I, as shown more especially in Figs. 3 and 8, is a gear segment 4B having a plurality of teeth 49 designed to engage within a plurality 0f openings 50 in the disk 43, so that when the handle is swung about its pivot the teeth 49 will engage progressively in the openings 50 and rotate the disk 43 upon the pin 39. It will be understood that, as shown in Fig. 4 for example,'the disk 43 lies immediately behind and abuts the disk I6 and the slot 39 in the latter disk is va clearance slot to Ypermit the projection through this disk of the teeth 49 when the handle 2| is operated.

From the above description it will be seen that the teeth 49 serve to actuate the disk 43 which, in turn, through the pin and slot connection 40-45, picks up and rotates the member I6 which serves to withdraw the bolts.

The operation of my device may now be briefly described.

When the door IIJ is closed, the parts are in the position shown in the Figures 1 to 4 of the i 2,381,512' drawings: Thebolt'srr I4 are projected yintov their keeper'sandthe handle 2'I'occupi'es the full-'line toi open the door?, fthel iinger? piece 132' isv moved downwardly!asshowninFig. z3 vand the end 30 of the bolt 28,withdrawnffromwitsikeeperopenw f.

ing. The spring 26 then moves the handle out- The upper horizontal portion of the handle may now be grasped by the iingers as there is suieient room to insert the iing'ers between this por-a tion of the handle and the surface of the door I0.

During this movement of the handle 2|, thepin 45 moves from the lower end of the slot 4l)v ras shown in Fig. 2 to the upper end of this slot as shown in Fig. 6 but effects no movement of the disk IS. It is, however, now in position to pick up the disk I6 and a continued movement of the handle will cause movement of this disk,

'it being understood that during the initial movement of the handle heretofore described thedisk 43 has been moved slightly by the engagement of the gear teeth 49 in the openings 50 ofthe disk 43.v

`'I'hehandle is now pulled toward the observer in the same direction about its pivot'21.v This continued movement, as will be clear, serves to move the bolt-operating disk I6 from thelposi-l tion shown inv Figs. 2 and 6, to the position shown inFig. 7, which latter position corresponds to that of the handle shown in Fig. 8. This movement of the disk serves to withdraw the bolts I4 from their keepers and releases the door, and further movement of the member I6 is prevented by means of the engagement'of the pin 31 in the .f f I slot 38.

ing handle then moved from the position shown in Fig. 8 to `that shown in Fig, 3. This serves toagain preject the bolts I4 and the handle may be pressed inwardly against the tension of the spring y26 to its depressed position in the housing I8, the beveled end 30 of the bolt 28 permitting this movement and then springing outwardly v'to latch the handle in this position, It will be obvious. that I have provided a bolt-operatmg mechanism having a handle pivoted on the door in such a relation that the handle is first moved by a spring action vfrom a depressed position to an exposed position in which it may be grasped without effectingvany withdrawal of the bolts. A

2| the same -as shown in Fig. '1, or toward the right as shown in Fig. 3, so as to be given a further movement :i

openl position; while at theend of this m'ovementl thel'handlev -'is l'arev'ented'` a further movement Irelatively to'fthe .fdoor but 1its further tmovement takes placefwiththe 'door and drawsthe'door to open posit-ion.

WhileI have' shownand described a preferredembodim'ent `of my invention, itl will '-'bel under stood-that 'itis 'notfto.beflimitedto' all ofthe l dtails shown but is l capable of modiiicationand variationwithin the spiritfof: the -inventio'nand *withiny the scopefof'the-.rappendedfclaims. 1 f

What I claim is:

1. Door-latching mechanism comprising bolt means, a bolt actuator mounted on the door and connected to said bolt means to actuate the lattera handle movably mounted on the doorl and operatively connected to said actuator, said door being provided with a recess in its outer face in which said handle may be depressed to lie substantially flush with the face of the door, said handle being pivotally mounted on the door, means for latching said handlein depressed position, and spring Vmeans for moving said handle from such position upon release of said latching means, said actuator comprising a member rotatably mounted on the door, said handle connection thereto comprising a rotatable plate oted to the housing to lie in a depressedposition therein and adapted to swing outwardly through said opening about an axis transverse to the axis of the actuator, said handle being operatively connected to said actuator to rotate the llatter by the' outward pivotal movement of the handle, and means for latching said handle in depressed position. 'i

3. Door-latching mechanism for a door having n an opening through its inner face, a housing defurther movement of the handle in the same directionserves to withdraw the bolts while a continued `pull upon the handle in the same direction after the bolts are withdrawn serves to .draw the door to open position. It will be noted that the handle is pivoted at its end nearestA the hinged edge of the door and swings toward that the movement of direction as that of Also, it may be noted this edge of the'door so the handle isin the same the door about its hinges.

` that the initial movement of the handle, that is,

signed to lbe secured to the door opposite said opening-bolt means, avbolt actuator connected to said boltmeans to actuate the latter, a supporting member carried by said housing to which f said actuator is rotatively secured, a handle pivoted to the housing to lie in a depressed position Vtherein and adapted to swing outwardly through said opening about an axis transverse to the axis ofthe actuator, said handle being operal tively connected to said actuator to rotate the opening, bolt means, a bolt actuator connected to said bolt means to actuate the latter, a supporting member carried by said housing to which said actuator is rotatively secured, a handle pivoted to the housing to lie in a depressed position therein and adapted to swing outwardly through said opening about an axis transverse to the' axis the movement to its exposed position, takes place without affecting the position of the bolts. This second movementof the handle serves to move the bolts but does not serve to move the door to panting membemcarriam:bwsaidxhonsntafwhichz said' actatorrisimtativeim seaultedi ami:l azhaxrdlef pivodtmthe-ihnusing 'tailie imaidepressxed.posi:-I

`tion v thvmeairn and. adapt-,edi ft'cr: swingt ontvmriily,-V

througlnsaich mening;4 said handle; being; apaisan-l tixzeiml connected; tm said actuatbn: toz rotate-f the@ connectvnsal betweenzf. said, handles amd.l saiclfaotu-y atm: comprising: al diskfrntatively mountecb on safid suppnx-.ting member 1 and:L having; a; :1ost:+mo tion'L c manemsioxrs withx sani@V acizuato1' andi saiccA liandl having ai prmectiom thereoni tm engagez saridzdisix-ztcrurntaiefthe:latter:` i

SAMUEL, OXHA'NDLER: 

